Explosion-engine.



J. G. UTZ.

EXPLOSION ENGINE.

APPLICATION FILED APR. 9, 1909.

Patented Jan; 9, 1912.

E 3 0 g w/vvw/z z A "main port to correspond with variations in- TEDSTATES PATENT forrrca JOHN G. UTZ, 015 DETROIT, MICHIGAN, 'ASSIGNlJR TOCHAIMERS-DETROIT 'MOTOR OOMPANY, OF DETROIT, MICHIGAN, A CORPORATIO N OFMICHIGAN- EXPLOSION-ENGINE.

. Specification of Letters Patent.

Application nieaii rne, 1909. Serial No. 489,012.

To all whom it may concern: Be it known that 1, JOHN G. U'rz, a citizenof the United States of America, residing at Detroit, in the county oflVayne and State of Michigan, have invented certain new and usefulImprovements in Explosion- Engines, of which the following is aspecification, reference being had therein to the accompanying drawings.

The invention relates to explosion engines of that type in which anaugmented charge of the explosive mixture is obtained by theintroduction of air compressed in the crank case' to supplement thecharge admitted through the main admission port.

It is one of the objects of the invention to provide means for varyingthe power by the controlling of the augmenting charge; further, toautomatically vary the richness of the explosive mixture admittedthrough the the augmenting charge of air; further, to

.- provide means'for introducing a volume of air in excess of thedisplacement of a single piston; and, further, in various features ofconstruction as hereinafter set forth.

The drawing is a vertical central cross section through an engineembodying the invention.

A is the engine cylinder, B the crank case, C the piston, D the crank,and E the pitman rod of an engine of any suitable construction.

F is the admission port for the explosive mixture, and G the exhaustport for theproducts of combustion. In addition to these ports, theengine is provided .With means for admitting air into the crank chamber,where it is compressed, and for transferring the compressed air to thecylinder above the piston where it augments the explosive charge.Various constructions may be employed for accomplishing this purpose,but, as shown, both the transfer port and the air admission .portintothe crankcase, as well as the main inlet port F and exhaust port G, arecontrolled by a pair of'cylindrical valvesleeves H H surrounding thepiston. These sleeves are reciprocated by pitmen I It connected tolatorally-projecting arms J Jf-on the sleeves and engaging cranks oreccentrics K on a rotary shaft driven from the main crank shaft by asuitable gear train L. Thus the sleeves are'operated timed relation to.the move- PatentedJan.'9,1912.

mentof the piston, and the arrangement is such that all'of-the variousports-are opened and closed in the desiredorder. I

The explosivemixture is formed by 5 carbureter or other suitabledevice,--whi-:h is

connected by the conduit M withthe' mam admission ort FL It is, however,necessary to vary the'richness of this mixture to correspond with theamount of air transferred,"

from the crank case. 'T'husjif the'I-volume of air transferred isvaried, itisessential that the richness of the carburetedair should becorrespondingly varied. --I.. have therefore provided a controllingdevice: by which the l richness of the mixtureentering through the. portF is automatically varied in accord-.

duitMleading to the port F and O'Of. are butterfly valves in therespective branches.- Each of these branch conduits rovided witha'nozz'le for admitting the and are adjusted so as to dischargedifferent uel, and these nozzle P. P are of'ditferent capacity,

quantities of thefuelin the same interval of time. The compressed air.for augmentmg the charge is' transferred through aconduit Q, which isopened by the registration therewith of ports R in the sleeves H H" whenthe piston is, at the lower-end ofitsstroke. This will permit-thecompressed I air in thecrank case to pass through the conduit ,6) andports R Rinf above the plston, where it bejcommmthe cylinder gled withthe mixture introduced through"- "the conduit M and port F. The conduitQis provided with a valve preferably a butterfly valve S, and thisisconnected by suitable mechanism such as the rod T indicated in dottedlines with the valves 0 O" in .the branch conduits N N{ The arrange mentis such that whenever the valve S is closed the valve 0 will also beclosed, and the fuel introduced into the air current is restricted tothat discharged from the noz zle P", which is of lesser capacity thanthe nozzle P. On. the other hand, if the rod T is adjusted toopen'thevalve S the valve 0, will be simultaneously opened, and the valve 0'closed, which will throw into action the nozzle P having the greatercapacity. Thus the richness of the mixturegill be altered to 7correspond to the volume of. air, passlng i through the conduit Q.

The air compressed in the crank case may i be employed for the doublepurpose of augmenting the explosivecharge and for scavenging thecylinder to clean out the remnant of the burned gases after thescavenging stroke of the piston. The air for augmenting the charge istransferred through the ports R R in the sleeves H H', as has beendescribed, but the movement of these sleeves is such that these portsonly come into registration once in each cycle. An-

other port U is arranged in the sleeve H which is adapted to registerwith the port R and conduit V, also connecting with the crank case andhaving the controlling valve W therein which is adjustable independentlyof the valves S, O and O. The ports R R, U R-register with theirrespective conduits alternately, and are 360 apart in the cycle, so that'the air transferred through the conduit V and ports U R will beadmitted to the cylinder at the proper time to scavenge the burnt gasesthe amount of air admitted depending upon the adjustment of the valve W.Variations in the control may lie obtained by alteration in the relativeadjustment of the valves W and S, so that a larger portion of the aircompressed in the crank .case will be used at one time for augmentingthe explosive charge, or at another time may be used for scavenging.Also the valves Wand S may beadjusted to completely close the passages Vand Q.

i What I claim as my invention is:

1. In an explosion engine, the combination with means for introducing anexplosivecharge into the'explosion chamber, and means for introducing avariable volume.of compressed air to augment said explosive charge; ofmeans automatically operating, upon the variation of the volume of saidaugmenting air, for proportionately varying the richness of theexplosive mixture.

2. In an explosion engine, the combination with a cylinder and a piston,of a crank case forming a compression chamber, means for admitting anexplosive mixture intofor said transfer means adjustable to admit air tothe cylinder either for scavenging 9 1; augmenting the explosive charge,said means being also adapted to completely cut-off communicationbetween the transfer means and the engine cylinder.

4. In an explosion engine, 'the combination of means for introducing anexplosive charge into the explosion chamber, means. for introducing avolume of compressed air to augment said explosive charge, a valvecontrolling each of said means, and a connection between said valveswherebyupon the adjustment of one of said valves the other isautomatically and correspondingly adjusted.

' In testimony whereof I afiix my signature in presence of twoWitnesses.

JOHN G. UTZ.

Witnesses:

.J. H. Nonamo'ron,

H. L. BILL.

